Senior Data Engineer (Python, AWS
Cardiff, Cardiff City Area, CF10, Wales, UK
Listed on 2026-08-14
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Software Development
Data Engineering, AWS, Python, SQL Developer
MCS Group is exclusively partnering with a successful, fast-growing technology company as it expands its Data Engineering team. This is a senior, hands-on role for an experienced engineer who is highly confident working with Python, SQL and AWS. You will help build a modern data platform that transforms large volumes of complex, proprietary data into scalable analytics, AI capabilities and customer-facing product features.
This is not a traditional reporting role. You will be building production-grade data services, APIs and pipelines that sit at the heart of the company's technology products.
This is a remote position for candidates based in the UK and sponsorship is unforuntatley unavailable.
The RoleThe Senior Data Engineer will work closely with software engineers, product teams, data specialists and technical leadership to design and deliver reliable, scalable data solutions.
Your responsibilities will include:
- Building robust data pipelines and backend data services using Python and SQL
- Designing data APIs, semantic layers and curated datasets
- Developing cloud-native data solutions within AWS
- Structuring and modelling complex engineering and simulation data
- Supporting analytics, machine learning and AI-driven product capabilities
- Working with Product Managers to translate requirements into scalable technical solutions
- Collaborating with Data, AI, BI, QA and Software Engineering teams
- Contributing to CI/CD, infrastructure-as-code and Dev Ops practices
- Maintaining high standards across data quality, testing, monitoring and performance
- Evaluating new tools, frameworks and architectural approaches as the platform evolves
- Strong commercial experience in data engineering or backend software engineering
- Advanced Python development skills
- Strong SQL skills, including complex querying and data modelling
- Hands-on experience building and deploying solutions within AWS
- Experience developing production-grade data pipelines and services
- Practical knowledge of ETL and ELT tooling such as Airflow, dbt, Airbyte, Temporal or Fivetran
- Experience with data warehousing and modern data architecture patterns
- A strong understanding of data validation, testing, monitoring and quality
- Experience working within a software product or technology-led environment
- Strong communication skills and the ability to work across technical and non-technical teams
Up to £90,000 plus benefits
Additional InformationAll conversations will be treated in the strictest of confidence.
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